//
//  Atom.h
//  C
//
//  Created by 钟纪旺 on 16/4/8.
//  Copyright © 2016年 zjw. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Atom : NSObject
@property (readonly)NSUInteger protons;
@property (readonly)NSUInteger neutrons;
@property (readonly)NSUInteger electrons;
@property (readonly)NSString *chemicalElement;

-(NSUInteger) massNumber;

@end
